In hypoplastic left heart syndrome, the left side of the heart is smaller than usual. As a result, the body doesn't get enough oxygen-rich blood.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
Make a gift before July 31 and it can be doubled in impact thanks to a $100,000 Summer Challenge.